package ptaweek1;

import java.util.Scanner;

public class topic01 {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in); 
        while(sc.hasNext()){
        	int a=sc.nextInt();
        	int b=sc.nextInt();
        	if(Math.abs(a)>1000){
        		System.out.println("a<=1000");
        	}
        	else
        	System.out.println(a+b);
        }
	}

}
